declare module "ui/core/bindable" {
    import { ViewBase } from "ui/core/view-base";

    /**
     * The options object used in the Bindable.bind method.
     */
    export interface BindingOptions {
        /**
         * The property name of the source object (typically the ViewModel) to bind to.
         */
        sourceProperty: string;
        /**
         * The property name of the target object (that is the Bindable instance) to bind the source property to.
         */
        targetProperty: string;
        /**
         * True to establish a two-way binding, false otherwise. A two-way binding will synchronize both the source and the target property values regardless of which one initiated the change.
         */
        twoWay?: boolean;
        /**
         * An expression used for calculations (convertions) based on the value of the property.
         */
        expression?: string;
    }

    /**
     * An interface which defines methods need to create binding value converter.
     */
    export interface ValueConverter {
        /**
         * A method that will be executed when a value (of the binding property) should be converted to the observable model.
         * For example: user types in a text field, but our business logic requires to store data in a different manner (e.g. in lower case).
         * @param params - An array of parameters where first element is the value of the property and next elements are parameters send to converter.
         */
        toModel: (...params: any[]) => any;
        /**
         * A method that will be executed when a value should be converted to the UI view. For example we have a date object which should be displayed to the end user in a specific date format.
         * @param params - An array of parameters where first element is the value of the property and next elements are parameters send to converter.
         */
        toView: (...params: any[]) => any;
    }

    export class Binding {
        constructor(target: ViewBase, options: BindingOptions);
        public bind(source: Object): void;
        public unbind();
        public sourceIsBindingContext: boolean;
        public updateTwoWay(value: any);
    }
}